Harrison works at a factory that makes paper cups for water coolers. He calculated the outer surface area of each hollow cup as 17.9 square inches. What is the approximate slant height of the cup. please reply fast thanks

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?